William livingstone



(No Model.)

W. LIVINGSTONE.

FURNITURE GASTER.

Patented Sept. 20, 1887.

Nirnn rares PAT-snr rtree.

VILLIAM LIVINGSTONE, OF JERSEY CITY, NEYVl JERSEY.

FURNITURE-CASTER.

SPECIFICATION forming part of Letters Patent No. 370,270, dated September 20, 1887.

Application tiled August 16, 1857. `Serial No. 247,056. (No model.)

- To @ZZ whom it may concern:

Be it k nown that l, WILLIAM LrvrNesroNE, of Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Furniture- Casters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in furniture-casters, and is designed more particularly as an improvement on the caster shown and described in my application numbered 241,403, filed October l, 1886.

rIhe object of this invention is to provide an improved device for locking the arms of the wheel-frame in position.

A further object is to provide a cheap, simple, durable, and easily-constructed device that can be struck up at a single operation from a circulardisk of sheet metal, and that will firmly secure the arms of the wheel-frame from lateral displacement, and afford a smooth and comparatively frictionless bearing for the wheel-frame.

With these ends in view my invention consists in certain details in construction, as will be more fully described, and pointed out in the claim.

In the accompanying drawings, Figure 1 is a View in side elevation of a caster embodying my invention. Fig. 2 is a plan View of the wheel-frame and wheel, the locking-plate being removed. Fig. 3 is a view in perspective of the blank from which the cupshaped locking-,plate is formed. Fig. 4 is a similar view of the completed cup, and Fig. 5 is a view in longitudinal section of the completed caster.

A represents the caster-wheel frameformed from a sheet-metal strip, which latter is bent, Substantially as shown, to form the eye a and arms b. -The two sides of the frame A be.- tween the arms b and eyes c are brought together or into contact, and are adapted to be held in this position by the locking-plate, to be hereinafter described. The free ends of the arms b are perforated for the reception of the wheel-axle c, on which the Wheel or roller 5o B is mounted.

cular disk of sheet metal, d. This disk can be provided with the central opening, e, and the peripheral notch f prior to the operation of forming the cup-shaped locking-plate; or g The flat upper bearing-surface of the cupshaped locking-plate C immediately around the eye e is perfectly smooth, and, being narrow, forms a comparatively frictionless surface, which permits the caster to turn readily. The flange g of the cup-shaped locking-plate C is constructed to closely embrace the upper edge of the eye a of the wheel-frame and prevent said eye from spreading, and the notch f in' the flange is of a length equal to the thickness of the part h of the wheel-frame immediately adjacent to the eye, and the shoul ders f', formed by notching the flange g, bear against the opposite sides of said part h and prevent 'the two sections or sides from separating when subjected to heavy lateral strains.

The pin or screw D is constructed at its lower end to enter the eye e, and is provided with the collar i, which latter forms a bearing for the cup-shaped locking-plate.

The advantages of this construction of locking-plate over the lockingplates heretofore used, and also over the locking-plate shown in my application above referred to, are numerous. In the first place, after the plate has been struck up itis complete, and no bending is required while assembling the parts. Again, by providing the locking-plate with a iiange alltendency of the eye to spread is obviated, and by notching the iiange for the reception of a portion of the bent-frame-the sides of the latter are absolutely prevented from separating. Again, the disk being perfectly smooth at the start, no finishing for the Wearing-surface thereof is required. y

Having fully described my invention, what Ico y I claim as new, and desire to secure by Letters site sides of the Wheel-supporting frame, sub- 1o l Patent, isstantiailly as set forth.

A easter consisting, essentially, of a pin or In testimony whereof I have signed this spindle having a collar, a Wheel-frame made of specification in the presence of tWo subscrib- 5 sheet metal bent to form an eye and wheeling Witnesses.

supporting arms, and a sheet metal eup- WILLIAM LIVINGSTON E. shaped looking-plate adapted to fit over the Witnesses: eye of the Wheel -frame and provided with GEORGE H. NEWKIRK, shoulders adapted to bear against two oppo- A. O. WHELPLEY, J r. 

